My DNA was not done with bone marrow, just blood work, I think out of Florida. It has been since about 2011 without being clarified as ET or reactive, although I have not asked; just trusting the medical community. I would agree that if the reactive cause has not been found/cured since 2011, it is probably ET, but I do agree with you that this could be "wrong." It is interesting, as I have found in this service of Mayo Clinic, that thrombocytosis is sometimes considered a cancer by insurance companies, especially as they treat it with cancer drugs. I hope that I do not develop leukemia nor fibrosis of the marrow. I suppose that I could be considered an alcoholic which could be causing the elevated plateletes, but surely there would be a biological/social proof of that by now, other than the platelet count?